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Finding the Fourth Proportional to 133,710.60, 200,517.30 and 67,128.60

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Solution

The fourth proportional to 133,710.60, 200,517.30 and 67,128.60 is: 100,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,710.60 : 200,517.30 = 67,128.60 : x
  2. Step 2: Convert to fraction form
    133,710.60/200,517.30 = 67,128.60/x
  3. Step 3: Cross multiply
    133,710.60x = 200,517.30 × 67,128.60
  4. Step 4: Simplify right side
    133,710.60x = 13,460,445,624.78
  5. Step 5: Solve for x
    x = 13,460,445,624.78/133,710.60
  6. Step 6: Final answer
    x = 100,668.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.